Whatever I'm using, I keep next to my bed or in my purse. My home/private space is my bedroom. The rest of the apartment is for the rest of the family. My bedroom is my living room, computer room, bed room, tv room, . . . everything but my bathroom and kitchen.The device in my bedroom is the one I use least... it will last over a year between battery charges/ refilling of tank. The one on the couch arm lasts months. The one by my computer desk is also the one I stick in my pocket if I'm headed out the door, and it doesn't last 24 hours between recharges/refills. My joose bottle and battery charger are naturally at the computer desk as well.
And, I still lose mods here and there around the house!
I always keep 2 mods working, for backup. If I use more, it's because I'm experimenting or playing around with something different (different setup, different flavor, whatever).
ETA: And, I much prefer VW over VV. Although either will do. Haven't tried TC yet. Thinking about it makes my head spin.